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56158 (1999 CG138)
Classification: Main-belt Asteroid          SPK-ID: 2056158
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073738440063867 4.4424e-08  
a 2.566721138318281 9.9209e-09 au
q 2.034450309372771 1.161e-07 au
i 2.934539202384484 3.909e-06 deg
node 320.6784666791842 9.0454e-05 deg
peri 301.6323752645152 9.0905e-05 deg
M 347.4382036541141 8.419e-06 deg
tp 2459052.910186516556
(2020-Jul-22.41018652)
3.5084e-05 TDB
period 1501.987982167806
4.11
8.7082e-06
2.384e-08
d
yr
n .2396823438496593 1.3896e-09 deg/d
Q 3.098991967263792 1.1978e-08 au
  Orbit Determination Parameters
   # obs. used (total)      841  
   data-arc span      7855 days (21.51 yr)  
   first obs. used      1999-02-11  
   last obs. used      2020-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53969  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:00:37  

Additional Information
 Earth MOID = 1.02076 au 
 Jupiter MOID = 1.9939 au 
 T_jup = 3.400 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO432117  

56158 (1999 CG138)          Discovered 1999-Feb-11 by Spacewatch at Kitt Peak
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CG138 = 2000 QH77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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